[zfs-discuss] Guide to COMSTAR iSCSI?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi! I have configured two LUs following this guide: http://thegreyblog.blogspot.com/2010/02/setting-up-solaris-comstar-and.html Now I want each LU to be available to only one distinct client in the network. I found no easy guide how to accomplish the anywhere in the internet. Any hint? Martin -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) iQEcBAEBAgAGBQJNBIzZAAoJEA6eiwqkMgR8NhYIALeIA7VTTSP3PkpN+GaIwQ/e Y5lVRTJCCY5jcj++g7WLniF9NmbrYrm/dGObXGL8WbkdsJSW1G0vUwVoW+lEYU9G wFbXRtny5uklb7N7coy25aPioSGdJGaIBFk+I7Taus1plc1hs0B0sJffBxNzF4lQ YfsyQxwd6kY9y4dc8+E41YPgeRojle96UDuJIEnjG4X4nii6VhlfCUOU7vlxvJli 64wB8cE6+4AS582M7/a7q+7+zU/uokTzeS3JAPY+uQEmSMp3COz9YsJSNiqvIiIm Op7XWeBzr7eDuK+0hrHRaXj/uxhIUfEY9Xci6hdYv2kldM0fD7Ds6fe84wAsHns= =EB37 -END PGP SIGNATURE- ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] unable to login with root
dear all i have a solaris 11 express installed with ZFS . Recently i forgot the password and i reset the password to empty password and when i reboot i get this message. pam_authtok_get : login : empty password not allowed for root from localhost. I dont know the ip address of this machine to login from remote host and there is no othere user except root. Please give your suggestions. Thanks/Regards Sadiq ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] unable to login with root
On Sun, 12 Dec 2010 13:07:15 +0300, Mohammed Sadiq sadiq1...@gmail.com wrote: dear all i have a solaris 11 express installed with ZFS . Recently i forgot the password and i reset the password to empty password and when i reboot i get this message. pam_authtok_get : login : empty password not allowed for root from localhost. I dont know the ip address of this machine to login from remote host and there is no othere user except root. Trying to remote login will probably give the same symptoms. Boot in single user mode (add -s on the grub kernel line). You get a console login prompt. Login as root. That one might accept an empty password (untested). If that fails, boot from a live CD, mount the root pool in /a or /mnt, and paste the hash of a known password into the second field of the entry for root in /etc/shadow The hash for the password solaris (without the quotes) is $5$3Euhlh2Y$E9qTjs62HIoipqTwY75Ox.JDVgk/9QFglv.w1rE4wE0 Hope this helps. -- ( Kees Nuyt ) c[_] ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] What performance to expect from mirror vdevs?
On Sat, 11 Dec 2010, Stephan Budach wrote: At first I disabled all write cache and read ahead options for each raid group on the raids, since I wanted to provide ZFS as much control over the drives as possible, but the performance was quite worse. I am running this zpool on a Sun Fire X4170M2 with 32 GB of RAM so I ran bonnie++ with -s 63356 -n 128 and got these results: Sequential Output char: 51819 block: 50602 rewrite: 28090 I am not very familiar with bonnie++ output. Does 51819 mean 51MB/second? If so, that is perhaps 1 disk's worth of performance. Random seeks: 510 - this seems really low to me, isn't it? It does seem a bit low. Everything depends on if the random seek was satisfied from ARC cache or from the underlying disk. You should be able to obtain at least the number of physical seeks available from 1/2 your total disks. For example, with 16 pair and if each disk could do 100 seeks per second, then you should expect at least 8*100 random seeks per second. With zfs mirroring and doing only read-seeks, you should expect to get up to 75% of the seek capability of all 16 disks combined. Since I was curious, what would happen, if I'd enable WriteCache and ReadAhead on the raid groups, I turned them on for all 32 devices and re-ran bonnie++. To my great dismay, this time zfs had a lot of random troubles with the drives, where zfs would remove drives arbitrarily from the pool since they exceeded the error thresholds. On one run, this only happend to 4 drives from one fc raid on the next run 3 drives from the other raid got removed from the pool. Ungood. Note that with this many disks, you should be able to swamp your fiber channel link and that the fiber channel should be the sequential I/O bottleneck. It may also be that your RAID array firmware/CPUs become severely overloaded. I know, that I'd better disable all optimizations on the raid side, but the performance seems just too bad with these settings. Maybe running 16 mirrors in a zpool is not a good idea - but that seems more than unlikely to me. 16 mirrors in a zpool is a very good idea. Just keep in mind that this is a lot of I/O power and you might swamp your FC link and adaptor card. Is there anything else I can check? Check the output of iostat -xn 30 while bonnie++ is running. This may reveal an issue. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer,http://www.GraphicsMagick.org/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] What performance to expect from mirror vdevs?
On 12/12/10 04:48 AM, Stephan Budach wrote: Hi, on friday I received two of my new fc raids, that I intended to use as my new zpool devices. These devices are from CiDesign and their type/model is iR16FC4ER. These are fc raids, that also allow JBOD operation, which is what I chose. So I configured 16 raid groups on each system and configured the raids to attach them to their fc channel one by one. On my Sol11Expr host I have created a zpool of mirror vdevs, by selecting 1 disk from either raid. This way I got a zpool that looks like this: At first I disabled all write cache and read ahead options for each raid group on the raids, since I wanted to provide ZFS as much control over the drives as possible, but the performance was quite worse. I am running this zpool on a Sun Fire X4170M2 with 32 GB of RAM so I ran bonnie++ with -s 63356 -n 128 and got these results: Sequential Output char: 51819 block: 50602 rewrite: 28090 Sequential Input: char: 62562 block 60979 Random seeks: 510 - this seems really low to me, isn't it? Sequential Create: create: 27529 read: 172287 delete: 30522 Random Create: create: 25531 read: 244977 delete 29423 The closet I have by way of caparison is an old thumper with a stripe of 9 mirrors: Sequential Output char: 206479 block: 601102 rewrite: 218089 Sequential Input: char: 138945 block 702598 Random seeks: 1970 Getting on for an order of magnitude better on I/O. Is there anything else I can check? iostat are recommended elsewhere. -- Ian. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
